XU XSUSeries Bearings

XU XSU Series Bearings

XU XSU Series Bearings

The gearless single-row crossed roller slewing bearing is a precision component designed for applications requiring exceptional rotational accuracy, high rigidity, and the freedom to implement custom drive solutions. Unlike geared alternatives, this configuration allows engineers to design the drive system independently while benefiting from the superior load-handling characteristics of crossed roller technology.



Application Areas:

Robotics and automation equipment

Precision rotary tables and indexing systems

Radar and antenna positioning systems

Medical imaging and radiotherapy equipment

High-accuracy solar tracking systems

Machine tools and coordinate measuring equipment



  • XU XSU Series Bearings
  • XU XSU Series Bearings
InquiryTypeBrandDimensionsFixing HolesStructure SizeBasic Load RatingsWeight (KGS)
DdiHLaLin1n2φ1φ2hBC Dida

This bearing series consists of an inner ring, an outer ring, and a single row of cylindrical rollers arranged in a crossed pattern between precision-ground raceways. Both rings are supplied without gear teeth, featuring smooth outer surfaces that simplify integration into existing machine designs. The rollers are oriented with their axes alternating at 90-degree angles, creating an arrangement that efficiently manages axial loads from both directions, radial loads, and tilting moments simultaneously. The crossed roller geometry provides line contact with the raceways, delivering greater load-carrying capacity and enhanced rigidity compared to ball bearings of similar dimensions.

The elimination of gear teeth reduces manufacturing complexity and cost while making the bearing easier to handle during transportation and installation. Both rings incorporate mounting holes for secure bolted attachment to the machine structure.


Series HJ-Single Row Cross Roller Slewing Bearing-Non gear.jpg